Ink composition and inkjet recording method

Abstract

The ink composition thus provided comprises: a dispersion medium; and a charged particle comprising a colorant, wherein the charged particle contains at least one polymer, and said at least one polymer includes at least one polymer having a melting point (Tm). A method of inkjet recording thus provided comprises flying an ink droplet of the ink composition by utilizing an electrostatic field.

1. An ink composition for electrostatic inkjet recording, comprising:
 a dispersion medium; and 
 a charged particle comprising a colorant, 
 wherein the charged particle contains at least one polymer, and said at least one polymer includes at least one first polymer having a melting point of from 40 to 100° C. 
 
     
     
       2. The ink composition for electrostatic inkjet recording of  claim 1 ,
 wherein said at least one polymer includes said at least one first polymer in amount of from 5 to 100% by weight. 
 
     
     
       3. The ink composition for electrostatic inkjet recording of  claim 1 ,
 wherein said at least one first polymer comprises a crystalline polyester compound. 
 
     
     
       4. The ink composition for electrostatic inkjet recording of  claim 1 ,
 wherein said at least one first polymer comprises a crystalline polyethylene compound. 
 
     
     
       5. The ink composition for electrostatic inkjet recording of  claim 1 ,
 wherein said at least one first polymer comprises a crystalline polyethylene glycol compound. 
 
     
     
       6. The ink composition for electrostatic inkjet recording of  claim 1 ,
 wherein the charged particle further contains a coating material that coats the colorant, the coating material comprising at least one of (i) said at least one first polymer and (ii) at least one second polymer not having a melting point. 
 
     
     
       7. The ink composition for electrostatic inkjet recording of  claim 6 ,
 which has the coating material in amount of 0.1 to 40% by weight. 
 
     
     
       8. An method of inkjet recording comprising:
 flying an ink droplet of an ink composition by utilizing an electrostatic field, 
 wherein the ink composition comprises: 
 a dispersion medium; and 
 a charged particle comprising a colorant, 
 wherein the charged particle contains at least one polymer, and said at least one polymer includes at least one first polymer having a melting point of from 40 to 100° C.